1. (

• improbable ,
• unlikely ,

) not likely to be true or to occur or to have occurred; "legislation on the question is highly unlikely"; "an improbable event" ;

2. (

• unlikely

) has little chance of being the case or coming about; "an unlikely story"; "an unlikely candidate for reelection"; "a butcher is unlikely to preach vegetarianism" ;

3. (

• improbable ,
• unbelievable ,
• unconvincing ,
• unlikely

) having a probability too low to inspire belief ;